Finding the Fourth Proportional to 91,416.64, 126,157.08 and 51,128.68
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Solution
The fourth proportional to 91,416.64, 126,157.08 and 51,128.68 is: 70,558.76
Step by Step Solution
- Step 1: Write the proportion equation
91,416.64 : 126,157.08 = 51,128.68 : x - Step 2: Convert to fraction form
91,416.64/126,157.08 = 51,128.68/x - Step 3: Cross multiply
91,416.64x = 126,157.08 × 51,128.68 - Step 4: Simplify right side
91,416.64x = 6,450,244,973.05 - Step 5: Solve for x
x = 6,450,244,973.05/91,416.64 - Step 6: Final answer
x = 70,558.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.